A regrettably common sight: A vehicle running on Daytime Running Lights (DRLs), where the driver sees light at the front and assumes that all lights are on, but DRLs typically only operate the front lights and not the rear, thus creating significant danger from behind, especially in heavy rain or foggy conditions that reduce visibility. Usually, the dashboard instruments are also unlit — intended as a clue for the driver — but as drivers have not adequately been educated about this, most just drive on, oblivious to the danger. (Copyright image.)